Dear cluster users,

in the SSH Client PuTTY a vulnerability was found (CVE-2024-31497  <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-31497>), which allows an Attacker to gain access to the user private key.
This vulnerability only effects ECDSA keys, if RSA and ED25519 keys are not effected.

If you use PuTTY with ECDSA keys to conncet to the Cluster please follow the following steps in order remedy the issue:

* Update PuTTY to the version 0.81
* Create a new key pair
* In the/authorized_keys/  file Replace the public key of the key pair you have been using so far with the public key of the newly generated key pair

Please be aware that besides PuTTY the following programs are also efected by the vulnerability:

* Filzilla
* WinSCP
* TortoiseGit
* TortoiseSVN

Best regards

Your HPC support team

Linaro Forge, version 23.1.1, has been installed on the OMNI cluster. Users can access this module with the following command:

$ module load debugger/linaro_forge

For more details, please visit here.

Information about TotalView has been moved to the new section “Debugger.”

Mit freundlichen Grüßen Ihr HPC-Support-Team

Dear cluster users,

GPU sharding is now available on the OMNI cluster.
GPU sharding enables the parallel use of a GPU by multiple Slurm jobs, this allows a more efficient use of our GPU resources.
Please check if the use of GPU Sharding is feasible for your computations.

More information is available on our website:

GPUs

If you have questions or problems with using the cluster, open a ticket
by sending an e-mail to:

hpc-support@uni-siegen.de

Best regards
Your HPC support team

The Intel oneAPI Base and HPC Toolkit versions 2022.02.0 and 2023.1 have been installed.

$ module load oneapi

The GCC-Compiler version 12.2.0 is now available on the OMNI, which replaces the GCC-Compiler version 11.2.1. To use GCC-Compiler version 12.2.0, it is necessary to load the module gnu12/12.2.0.

$ module load gnu12/12.2.0

The GCC-Compiler version 11.2.1 will be removed on 01.05.2023. As the default compiler, version 9.3.0 is still loaded.

Dear Cluster Users,

Groupspaces are now on available on the OMNI.

Groupspaces are group folders for teams which are accessible from the login- and compute-nodes. Groupspaces will only be created on request of the team leader. More information regarding Groupspaces is available on our Website:

https://cluster.uni-siegen.de/omni/usage/file-systems/?lang=en#groupspaces

Dear Cluster users,

the HPC consultation hour will take place via Webex video-conference system instead of the Zoom video-conference system starting from 28.03.2023. You can find more details about the Webex video-conference system in this link.

Note: Refer Events page for updated information regarding the HPC consultation hour.

Best Regards,

Your HPC-Team

Dear Cluster users,

due to the current situation we turned off about 15 % of our compute-nodes as an energy-saving measure.

We apologize for any inconveniences.

Best Regards,

Your HPC-Team

Dear cluster users,

in the upcoming winter semester 22/23 we offer once again our C++ introduction course. It will be held by our team member Verena Betge and will cover the basics of programming in general and in C++ specifically. The course is intended for absolute programming newbies. The course will be held in German.

Unlike our other courses, this course will not be held in a single block, but rather distributed over the semester’s lecture period. The first date is October 17, 2022, there will be 9 blocks overall. The blocks will be held every Monday 10:15-11:45.

The course is available to all students and employees. There is no prerequisite knowledge.

If you are interested, please send an email to verena.betge@uni-siegen.de.

For more information about topics and dates (in German), please go to the course page: https://cluster.uni-siegen.de/kurs/weekly-course-c-introduction-german-starting-october-17-2022/?lang=en

Best regards

Your HPC Team